含热电联供型光热电站与建筑相变储能的离网型综合能源系统  

Off-grid Integrated Energy System With Combined Heat and Power CSP Plants and Phase Change Storage Building

作　　者：孙士茼 汪致洵 林湘宁[1] 童宁[1] 刘畅[1] 随权 丁苏阳 李正天[1] SUN Shitong;WANG Zhixun;LIN Xiangning;TONG Ning;LIU Chang;SUI Quan;DING Suyang;LI Zhengtian(Huazhong University of Science and Technology,Wuhan 430074,Hubei Province,China)

机构地区：[1]华中科技大学

出　　处：《中国电机工程学报》2019年第20期5926-5937,共12页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51537003)~~

摘　　要：对于难以与大电网连接的偏远地区,如仅采用光伏发电,电网安全运行压力大,大规模弃光难以避免。含储热的光热电站具备良好的调度特性,是一种适用于离网型综合能源系统的电力供应形式。然而,相比于光伏,高昂的建设成本使得光热发电普及度有限。因此,该文提出含热电联供型光热电站与相变储能的离网型综合能源供给系统及其协调调度策略,背压式热电联供机组可以有效提升光热电站的综合能量产出效率,建筑相变储能的储热/冷能力则能够松弛机组自身的热电比约束,在满足系统综合能源需求的前提下,提高各机组的运行经济性,以降低综合能源系统的运行成本。算例仿真验证该文所提能源供给模式及协调调度策略的可行性与有效性。For those remote areas which are difficult to establish connections with main power grids, relying solely on photovoltaic(PV) plant cannot guarantee the safe operation of the system, resulting in large-scale solar curtailment. concentrating solar power(CSP) with thermal energy storage(TES) has high schedulability and its characteristics adapt well to the off-gird integrated energy system. However, the application of CSP is limited by its high investment compared with PV. An off-grid integrated energy system coordinated with combined heat and power CSP plants and phase change building materials was proposed. Back-pressure turbines(BT) can effectively improve energy production efficiency of CSP plants. The heat/cold storage capacity of phase change materials can relax the thermoelectric constraint of BTs, improvethe operating efficiency of thermal power units and reduce the operation cost of integrated energy system under the premise of meeting the energy demand. The case study verified the feasibility and effectiveness of the proposed energy supply mode along with the proposed scheduling strategy.

关 键 词：光热发电 储热系统 热电联供 相变材料 

分 类 号：TM732[电气工程—电力系统及自动化]